281225430 has 24 divisors (see below), whose sum is σ = 731186352. Its totient is φ = 74993424.

The previous prime is 281225423. The next prime is 281225467. The reversal of 281225430 is 34522182.

281225430 is a `hidden beast` number, since 2 + 8 + 1 + 225 + 430 = 666.

281225430 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 281225394 and 281225403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1562274 + ... + 1562453.

It is an arithmetic number, because the mean of its divisors is an integer number (30466098).

Almost surely, 2^281225430 is an apocalyptic number.

281225430 is an abundant number, since it is smaller than the sum of its proper divisors (449960922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

281225430 is a wasteful number, since it uses less digits than its factorization.

281225430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124740 (or 3124737 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 281225430 is about 16769.7772793797. Note that the first 3 decimals coincide. The cubic root of 281225430 is about 655.1662689993.

The spelling of 281225430 in words is "two hundred eighty-one million, two hundred twenty-five thousand, four hundred thirty".